The video reveals Killgrave's first name is "Kevin," whereas in the comics he is called "Zebediah."
At the dinner table scene, Jessica says that she's not wearing the purple dress that Kilgrave picked out for her because "purple's not really (her) color." In the comics, Zebediah Kilgrave was known as the Purple Man.
"WWJD?" is most commonly an abbreviation for "What Would Jesus Do?" used on religious T-shirts, bracelets, and mugs. In this context it stands instead for "What Would Jessica Do?"
When Kilgrave allows Jessica to view one of the videos of his childhood-self being experimented on by his parents, he chooses the one with the time stamp of 1985-10-31 (Halloween). Ironically, it is the first time Jessica has been permitted to see him beyond his "mask."
Long intimated, in this episode we finally see that Jessica can fly.